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Criterion
Paper illustration for Fault Isolation.
Engineering
Fault Isolation
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Paper illustration of the Lightning Decision Jam working structure.
Facilitation
Decision Jam
Purposedifferent
In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected.Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it.When a decision is stuck, Decision Jam loosens the knot through structured separation of problem, idea, and selection. The format creates movement without jumping prematurely at the first seemingly elegant answer.
Complexitydifferent
MediumLowLow
Timedifferent
30-180 min45-90 min60-90 min
Participantsdifferent
1-62-84-10
Formatdifferent
Workshop + asyncWorkshop + asyncWorkshop
Outputdifferent
Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault AreaAssumption List, Critical Assumptions, Learning PlanProblem Cluster, Prioritized Challenge, Experiment
Tagsno overlap
TroubleshootingDiagnosisEngineering
AssumptionsRiskDecisionDiscovery
FacilitationDecisionProblem solvingWorkshop
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Often compared together

Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration for Hypothesis-Driven Troubleshooting.
Engineering
Hypothesis-Driven Troubleshooting
Paper illustration of a calm four-quadrant Assumption Map with hypothesis cards and emphasis on important assumptions with little evidence.
Product Discovery
Assumption Mapping
Paper illustration of Business Model Stress Test with its method-specific working model.
Business Strategy
Business Model Stress Test
Paper illustration of the Consensus Workshop working structure.
Facilitation
Consensus Workshop